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/*-
* Copyright 2007-2009 Solarflare Communications Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/sfxge/common/efx_rx.c 228100 2011-11-28 20:28:23Z philip $");
#include "efsys.h"
#include "efx.h"
#include "efx_types.h"
#include "efx_regs.h"
#include "efx_impl.h"
__checkReturn int
efx_rx_init(
__in efx_nic_t *enp)
{
efx_oword_t oword;
unsigned int index;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
if (!(enp->en_mod_flags & EFX_MOD_EV)) {
rc = EINVAL;
goto fail1;
}
if (enp->en_mod_flags & EFX_MOD_RX) {
rc = EINVAL;
goto fail2;
}
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_DESC_PUSH_EN, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, 0x3000 / 32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
/* Zero the RSS table */
for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS;
index++) {
EFX_ZERO_OWORD(oword);
EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
}
enp->en_mod_flags |= EFX_MOD_RX;
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#if EFSYS_OPT_RX_HDR_SPLIT
__checkReturn int
efx_rx_hdr_split_enable(
__in efx_nic_t *enp,
__in unsigned int hdr_buf_size,
__in unsigned int pld_buf_size)
{
unsigned int nhdr32;
unsigned int npld32;
efx_oword_t oword;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_SIENA);
nhdr32 = hdr_buf_size / 32;
if ((nhdr32 == 0) ||
(nhdr32 >= (1 << FRF_CZ_RX_HDR_SPLIT_HDR_BUF_SIZE_WIDTH)) ||
((hdr_buf_size % 32) != 0)) {
rc = EINVAL;
goto fail1;
}
npld32 = pld_buf_size / 32;
if ((npld32 == 0) ||
(npld32 >= (1 << FRF_CZ_RX_HDR_SPLIT_PLD_BUF_SIZE_WIDTH)) ||
((pld_buf_size % 32) != 0)) {
rc = EINVAL;
goto fail2;
}
if (enp->en_rx_qcount > 0) {
rc = EBUSY;
goto fail3;
}
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_EN, 1);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_HDR_BUF_SIZE, nhdr32);
EFX_SET_OWORD_FIELD(oword, FRF_CZ_RX_HDR_SPLIT_PLD_BUF_SIZE, npld32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif /* EFSYS_OPT_RX_HDR_SPLIT */
#if EFSYS_OPT_RX_SCATTER
__checkReturn int
efx_rx_scatter_enable(
__in efx_nic_t *enp,
__in unsigned int buf_size)
{
unsigned int nbuf32;
efx_oword_t oword;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_FALCON);
nbuf32 = buf_size / 32;
if ((nbuf32 == 0) ||
(nbuf32 >= (1 << FRF_BZ_RX_USR_BUF_SIZE_WIDTH)) ||
((buf_size % 32) != 0)) {
rc = EINVAL;
goto fail1;
}
if (enp->en_rx_qcount > 0) {
rc = EBUSY;
goto fail2;
}
/* Set scatter buffer size */
EFX_BAR_READO(enp, FR_AZ_RX_CFG_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_USR_BUF_SIZE, nbuf32);
EFX_BAR_WRITEO(enp, FR_AZ_RX_CFG_REG, &oword);
/* Enable scatter for packets not matching a filter */
EFX_BAR_READO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q, 1);
EFX_BAR_WRITEO(enp, FR_AZ_RX_FILTER_CTL_REG, &oword);
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif /* EFSYS_OPT_RX_SCATTER */
#define EFX_RX_LFSR_HASH(_enp, _insert) \
do { \
efx_oword_t oword; \
\
EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
(_insert) ? 1 : 0); \
EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
\
if ((_enp)->en_family == EFX_FAMILY_SIENA) { \
EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
&oword); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 0); \
EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, \
&oword); \
} \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#define EFX_RX_TOEPLITZ_IPV4_HASH(_enp, _insert, _ip, _tcp) \
do { \
efx_oword_t oword; \
\
EFX_BAR_READO((_enp), FR_AZ_RX_CFG_REG, &oword); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_ALG, 1); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_IP_HASH, \
(_ip) ? 1 : 0); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_TCP_SUP, \
(_tcp) ? 0 : 1); \
EFX_SET_OWORD_FIELD(oword, FRF_BZ_RX_HASH_INSRT_HDR, \
(_insert) ? 1 : 0); \
EFX_BAR_WRITEO((_enp), FR_AZ_RX_CFG_REG, &oword); \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#define EFX_RX_TOEPLITZ_IPV6_HASH(_enp, _ip, _tcp, _rc) \
do { \
efx_oword_t oword; \
\
if ((_enp)->en_family == EFX_FAMILY_FALCON) { \
(_rc) = ((_ip) || (_tcp)) ? ENOTSUP : 0; \
break; \
} \
\
EFX_BAR_READO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_THASH_ENABLE, 1); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_IP_THASH_ENABLE, (_ip) ? 1 : 0); \
EFX_SET_OWORD_FIELD(oword, \
FRF_CZ_RX_RSS_IPV6_TCP_SUPPRESS, (_tcp) ? 0 : 1); \
EFX_BAR_WRITEO((_enp), FR_CZ_RX_RSS_IPV6_REG3, &oword); \
\
(_rc) = 0; \
\
_NOTE(CONSTANTCONDITION) \
} while (B_FALSE)
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_mode_set(
__in efx_nic_t *enp,
__in efx_rx_hash_alg_t alg,
__in efx_rx_hash_type_t type,
__in boolean_t insert)
{
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_family, >=, EFX_FAMILY_FALCON);
switch (alg) {
case EFX_RX_HASHALG_LFSR:
EFX_RX_LFSR_HASH(enp, insert);
break;
case EFX_RX_HASHALG_TOEPLITZ:
EFX_RX_TOEPLITZ_IPV4_HASH(enp, insert,
type & (1 << EFX_RX_HASH_IPV4),
type & (1 << EFX_RX_HASH_TCPIPV4));
EFX_RX_TOEPLITZ_IPV6_HASH(enp,
type & (1 << EFX_RX_HASH_IPV6),
type & (1 << EFX_RX_HASH_TCPIPV6),
rc);
if (rc != 0)
goto fail1;
break;
default:
rc = EINVAL;
goto fail2;
}
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
EFX_RX_LFSR_HASH(enp, B_FALSE);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_toeplitz_ipv4_key_set(
__in efx_nic_t *enp,
__in_ecount(n) uint8_t *key,
__in size_t n)
{
efx_oword_t oword;
unsigned int byte;
unsigned int offset;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
byte = 0;
/* Write toeplitz hash key */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
byte = 0;
/* Verify toeplitz hash key */
EFX_BAR_READO(enp, FR_BZ_RX_RSS_TKEY_REG, &oword);
for (offset = (FRF_BZ_RX_RSS_TKEY_LBN + FRF_BZ_RX_RSS_TKEY_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail1;
}
}
return (0);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_toeplitz_ipv6_key_set(
__in efx_nic_t *enp,
__in_ecount(n) uint8_t *key,
__in size_t n)
{
efx_oword_t oword;
unsigned int byte;
int offset;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
byte = 0;
/* Write toeplitz hash key 3 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
/* Write toeplitz hash key 2 */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
/* Write toeplitz hash key 1 */
EFX_ZERO_OWORD(oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
offset > 0 && byte < n;
--offset)
oword.eo_u8[offset - 1] = key[byte++];
EFX_BAR_WRITEO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
byte = 0;
/* Verify toeplitz hash key 3 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG3, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_HI_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_HI_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail1;
}
}
/* Verify toeplitz hash key 2 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG2, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_MID_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_MID_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail2;
}
}
/* Verify toeplitz hash key 1 */
EFX_BAR_READO(enp, FR_CZ_RX_RSS_IPV6_REG1, &oword);
for (offset = (FRF_CZ_RX_RSS_IPV6_TKEY_LO_LBN +
FRF_CZ_RX_RSS_IPV6_TKEY_LO_WIDTH) / 8;
offset > 0 && byte < n;
--offset) {
if (oword.eo_u8[offset - 1] != key[byte++]) {
rc = EFAULT;
goto fail3;
}
}
return (0);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_RX_SCALE
__checkReturn int
efx_rx_scale_tbl_set(
__in efx_nic_t *enp,
__in_ecount(n) unsigned int *table,
__in size_t n)
{
efx_oword_t oword;
int index;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFX_STATIC_ASSERT(EFX_RSS_TBL_SIZE == FR_BZ_RX_INDIRECTION_TBL_ROWS);
EFX_STATIC_ASSERT(EFX_MAXRSS == (1 << FRF_BZ_IT_QUEUE_WIDTH));
if (n > FR_BZ_RX_INDIRECTION_TBL_ROWS) {
rc = EINVAL;
goto fail1;
}
for (index = 0; index < FR_BZ_RX_INDIRECTION_TBL_ROWS; index++) {
uint32_t byte;
/* Calculate the entry to place in the table */
byte = (uint32_t)table[index % n];
EFSYS_PROBE2(table, int, index, uint32_t, byte);
EFX_POPULATE_OWORD_1(oword, FRF_BZ_IT_QUEUE, byte);
/* Write the table */
EFX_BAR_TBL_WRITEO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
}
for (index = FR_BZ_RX_INDIRECTION_TBL_ROWS - 1; index >= 0; --index) {
uint32_t byte;
/* Determine if we're starting a new batch */
byte = (uint32_t)table[index % n];
/* Read the table */
EFX_BAR_TBL_READO(enp, FR_BZ_RX_INDIRECTION_TBL,
index, &oword);
/* Verify the entry */
if (EFX_OWORD_FIELD(oword, FRF_BZ_IT_QUEUE) != byte) {
rc = EFAULT;
goto fail2;
}
}
return (0);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
#endif
#if EFSYS_OPT_FILTER
extern __checkReturn int
efx_rx_filter_insert(
__in efx_rxq_t *erp,
__inout efx_filter_spec_t *spec)
{
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT3P(spec, !=, NULL);
spec->efs_dmaq_id = (uint16_t)erp->er_index;
return efx_filter_insert_filter(erp->er_enp, spec, B_FALSE);
}
#endif
#if EFSYS_OPT_FILTER
extern __checkReturn int
efx_rx_filter_remove(
__in efx_rxq_t *erp,
__inout efx_filter_spec_t *spec)
{
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT3P(spec, !=, NULL);
spec->efs_dmaq_id = (uint16_t)erp->er_index;
return efx_filter_remove_filter(erp->er_enp, spec);
}
#endif
extern void
efx_rx_qpost(
__in efx_rxq_t *erp,
__in_ecount(n) efsys_dma_addr_t *addrp,
__in size_t size,
__in unsigned int n,
__in unsigned int completed,
__in unsigned int added)
{
efx_qword_t qword;
unsigned int i;
unsigned int offset;
unsigned int id;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
/* The client driver must not overfill the queue */
EFSYS_ASSERT3U(added - completed + n, <=,
EFX_RXQ_LIMIT(erp->er_mask + 1));
id = added & (erp->er_mask);
for (i = 0; i < n; i++) {
EFSYS_PROBE4(rx_post, unsigned int, erp->er_index,
unsigned int, id, efsys_dma_addr_t, addrp[i],
size_t, size);
EFX_POPULATE_QWORD_3(qword,
FSF_AZ_RX_KER_BUF_SIZE, (uint32_t)(size),
FSF_AZ_RX_KER_BUF_ADDR_DW0,
(uint32_t)(addrp[i] & 0xffffffff),
FSF_AZ_RX_KER_BUF_ADDR_DW1,
(uint32_t)(addrp[i] >> 32));
offset = id * sizeof (efx_qword_t);
EFSYS_MEM_WRITEQ(erp->er_esmp, offset, &qword);
id = (id + 1) & (erp->er_mask);
}
}
void
efx_rx_qpush(
__in efx_rxq_t *erp,
__in unsigned int added)
{
efx_nic_t *enp = erp->er_enp;
uint32_t wptr;
efx_oword_t oword;
efx_dword_t dword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
/* Guarantee ordering of memory (descriptors) and PIO (doorbell) */
EFSYS_PIO_WRITE_BARRIER();
/* Push the populated descriptors out */
wptr = added & erp->er_mask;
EFX_POPULATE_OWORD_1(oword, FRF_AZ_RX_DESC_WPTR, wptr);
/* Only write the third DWORD */
EFX_POPULATE_DWORD_1(dword,
EFX_DWORD_0, EFX_OWORD_FIELD(oword, EFX_DWORD_3));
EFX_BAR_TBL_WRITED3(enp, FR_BZ_RX_DESC_UPD_REGP0,
erp->er_index, &dword, B_FALSE);
}
void
efx_rx_qflush(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
uint32_t label;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
label = erp->er_index;
/* Flush the queue */
EFX_POPULATE_OWORD_2(oword, FRF_AZ_RX_FLUSH_DESCQ_CMD, 1,
FRF_AZ_RX_FLUSH_DESCQ, label);
EFX_BAR_WRITEO(enp, FR_AZ_RX_FLUSH_DESCQ_REG, &oword);
}
void
efx_rx_qenable(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFX_BAR_TBL_READO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DC_HW_RPTR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_HW_RPTR, 0);
EFX_SET_OWORD_FIELD(oword, FRF_AZ_RX_DESCQ_EN, 1);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
}
__checkReturn int
efx_rx_qcreate(
__in efx_nic_t *enp,
__in unsigned int index,
__in unsigned int label,
__in efx_rxq_type_t type,
__in efsys_mem_t *esmp,
__in size_t n,
__in uint32_t id,
__in efx_evq_t *eep,
__deref_out efx_rxq_t **erpp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_rxq_t *erp;
efx_oword_t oword;
uint32_t size;
boolean_t split;
boolean_t jumbo;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFX_STATIC_ASSERT(EFX_EV_RX_NLABELS == (1 << FRF_AZ_RX_DESCQ_LABEL_WIDTH));
EFSYS_ASSERT3U(label, <, EFX_EV_RX_NLABELS);
EFSYS_ASSERT3U(enp->en_rx_qcount + 1, <, encp->enc_rxq_limit);
if (!ISP2(n) || !(n & EFX_RXQ_NDESCS_MASK)) {
rc = EINVAL;
goto fail1;
}
if (index >= encp->enc_rxq_limit) {
rc = EINVAL;
goto fail2;
}
for (size = 0; (1 << size) <= (EFX_RXQ_MAXNDESCS / EFX_RXQ_MINNDESCS);
size++)
if ((1 << size) == (int)(n / EFX_RXQ_MINNDESCS))
break;
if (id + (1 << size) >= encp->enc_buftbl_limit) {
rc = EINVAL;
goto fail3;
}
switch (type) {
case EFX_RXQ_TYPE_DEFAULT:
split = B_FALSE;
jumbo = B_FALSE;
break;
#if EFSYS_OPT_RX_HDR_SPLIT
case EFX_RXQ_TYPE_SPLIT_HEADER:
if ((enp->en_family < EFX_FAMILY_SIENA) || ((index & 1) != 0)) {
rc = EINVAL;
goto fail4;
}
split = B_TRUE;
jumbo = B_TRUE;
break;
case EFX_RXQ_TYPE_SPLIT_PAYLOAD:
if ((enp->en_family < EFX_FAMILY_SIENA) || ((index & 1) == 0)) {
rc = EINVAL;
goto fail4;
}
split = B_FALSE;
jumbo = B_TRUE;
break;
#endif /* EFSYS_OPT_RX_HDR_SPLIT */
#if EFSYS_OPT_RX_SCATTER
case EFX_RXQ_TYPE_SCATTER:
if (enp->en_family < EFX_FAMILY_SIENA) {
rc = EINVAL;
goto fail4;
}
split = B_FALSE;
jumbo = B_TRUE;
break;
#endif /* EFSYS_OPT_RX_SCATTER */
default:
rc = EINVAL;
goto fail4;
}
/* Allocate an RXQ object */
EFSYS_KMEM_ALLOC(enp->en_esip, sizeof (efx_rxq_t), erp);
if (erp == NULL) {
rc = ENOMEM;
goto fail5;
}
erp->er_magic = EFX_RXQ_MAGIC;
erp->er_enp = enp;
erp->er_index = index;
erp->er_mask = n - 1;
erp->er_esmp = esmp;
/* Set up the new descriptor queue */
EFX_POPULATE_OWORD_10(oword,
FRF_CZ_RX_HDR_SPLIT, split,
FRF_AZ_RX_ISCSI_DDIG_EN, 0,
FRF_AZ_RX_ISCSI_HDIG_EN, 0,
FRF_AZ_RX_DESCQ_BUF_BASE_ID, id,
FRF_AZ_RX_DESCQ_EVQ_ID, eep->ee_index,
FRF_AZ_RX_DESCQ_OWNER_ID, 0,
FRF_AZ_RX_DESCQ_LABEL, label,
FRF_AZ_RX_DESCQ_SIZE, size,
FRF_AZ_RX_DESCQ_TYPE, 0,
FRF_AZ_RX_DESCQ_JUMBO, jumbo);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
enp->en_rx_qcount++;
*erpp = erp;
return (0);
fail5:
EFSYS_PROBE(fail5);
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
void
efx_rx_qdestroy(
__in efx_rxq_t *erp)
{
efx_nic_t *enp = erp->er_enp;
efx_oword_t oword;
EFSYS_ASSERT3U(erp->er_magic, ==, EFX_RXQ_MAGIC);
EFSYS_ASSERT(enp->en_rx_qcount != 0);
--enp->en_rx_qcount;
/* Purge descriptor queue */
EFX_ZERO_OWORD(oword);
EFX_BAR_TBL_WRITEO(enp, FR_AZ_RX_DESC_PTR_TBL,
erp->er_index, &oword);
/* Free the RXQ object */
EFSYS_KMEM_FREE(enp->en_esip, sizeof (efx_rxq_t), erp);
}
void
efx_rx_fini(
__in efx_nic_t *enp)
{
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_RX);
EFSYS_ASSERT3U(enp->en_rx_qcount, ==, 0);
enp->en_mod_flags &= ~EFX_MOD_RX;
}